EP3231529A1 - Dispositif de pose de rivets d'expansion - Google Patents

Dispositif de pose de rivets d'expansion Download PDF

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Publication number
EP3231529A1
EP3231529A1 EP17166217.4A EP17166217A EP3231529A1 EP 3231529 A1 EP3231529 A1 EP 3231529A1 EP 17166217 A EP17166217 A EP 17166217A EP 3231529 A1 EP3231529 A1 EP 3231529A1
Authority
EP
European Patent Office
Prior art keywords
expansion
head
expansion sleeve
rivet
expanding mandrel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17166217.4A
Other languages
German (de)
English (en)
Inventor
Thorsten Weyland
Tobias Gottfried
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TKR Spezialwerkzeuge GmbH
Original Assignee
TKR Spezialwerkzeuge GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TKR Spezialwerkzeuge GmbH filed Critical TKR Spezialwerkzeuge GmbH
Publication of EP3231529A1 publication Critical patent/EP3231529A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B21J15/043—Riveting hollow rivets mechanically by pulling a mandrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically

Definitions

  • Expanding rivets are known from the prior art in a variety of configurations. These usually have a setting head, which is followed by a cylindrical sleeve, which is formed in its end region when setting to the closing head. For attachment of these known rivets no special tools is required in the rule.
  • an expanding mandrel is inserted in the hollow body only in the end of the setting rivet designed as a hollow body and thus the closing head is formed by widening.
  • blind rivets For joints that are accessible only on one side, so-called blind rivets are often used. These have a rivet, which is traversed from the side of the later closing head ago by a rivet with resting on a rivet shank of the rivet rivet head and with an outstanding on the setting head side Anlagendom.
  • the blind rivet with the closing head side is inserted in advance into the rivet holes until the setting head of the rivet is seated.
  • a train for example, which can be generated by means of a hydraulic riveting tool on the tension dome causes the rivet stud to be drawn into the rivet, wherein the rivet shank widens or spreads and is thus deformed to form the closing head.
  • blind rivets require a free processing space on the closing head side. In addition, fall in the blind riveting the demolished Switzerlanddome as waste and the blind rivets completely close the rivet, so that through this passage is no longer possible.
  • the invention has for its object to provide a device for setting of expansion rivets, which can be used even with a one-sided accessibility of the components or workpieces to be joined.
  • the invention achieves the object by a device for setting of expanding rivets with the features of claim 1.
  • Advantageous developments of the invention are specified in the dependent claims.
  • Characteristic of the inventive device for setting of expansion rivets is that the expanding mandrel has a spreading head with an at least partially the inner diameter of the expansion projecting contact portion and the expansion sleeve is elastically expandable by the expansion.
  • the expanding mandrel is displaceably arranged between a release position and a set position in a passage opening of the rivet head which can be arranged on a riveting tool and in the expansion sleeve arranged coaxially with the expanding mandrel on the rivet head.
  • the contact portion In the release position is the contact portion which has a diameter at least in certain areas, which is greater than the inner diameter of the expansion, with the expansion sleeve out of engagement, or lies with the contact portion only on the expansion sleeve, but without deforming it.
  • the expanding head engages with the contact portion in such a way with the expansion sleeve that it is elastically expanded.
  • An elastic widening of the expansion sleeve is understood to mean a deformation in which the outer diameter of the expansion sleeve is at least partially enlarged by the expansion head after the expansion sleeve has to escape outwardly during insertion of the expansion head into the expansion sleeve.
  • the enlargement of the outside diameter of the Expansion sleeve causes again in a coaxial with the expansion sleeve arranged expansion rivet a deformation of the setting head opposite region of the expansion rivet such that this area is widened to form a closing head, so that the expansion rivet is positively fixed in the opening of the components.
  • the shape of the closing head can be determined, inter alia, via the outer geometry of the expansion sleeve.
  • variable due to the elastic expandability outer diameter of the expansion sleeve is dimensioned such that it can be passed through the expansion rivet designed as a rivet.
  • the outer diameter of the expansion sleeve is increased such that the outer surface of the expansion sleeve cooperates with its contact portion with the inner surface of the expansion rivet and thereby causes a deformation of the coaxially arranged Sp Schwarzniets, through which the closing head is formed.
  • the contact portion of the expansion head is basically dimensioned so that it has a smaller outer diameter than the inner diameter of the expansion sleeve.
  • a subsequent return displacement of the setting mandrel in the release position causes a reduction of the outer diameter elastic return displacement of the expansion sleeve in its original position, so that then the expanding mandrel can be transported with the expansion sleeve from the set Sp Schwarzniet out.
  • the riveting tool which can be used for displacing the setting mandrel can have, for example, a hydraulic drive.
  • the inventive device is characterized in that it on the opposite side of the setting head of the expansion rivet - which is usually inaccessible - only a small space required to form the closing head, d. H. needed to set the expansion rivet.
  • the riveting process can be carried out in a simple and comfortable way without - as is the case with blind rivets - waste generation.
  • the expansion rivet remains consistent.
  • a sealing of the opening of the expansion rivet can in principle be done in any way, if necessary.
  • the configuration of the elastic deformability of the expansion sleeve, so that it cooperates in the set position with a coaxially arranged expansion rivet and these by the formation of the closing head which may, for example.
  • the shape of a circumferential closing bead, positively arranged on the components to be joined, can in principle done in any way.
  • the expansion sleeve for example, in two parts, a base body and an expansion body may be formed having, wherein the base body against the spreader in the set position is elastically displaced.
  • the elasticity is, for example, on the design of the compound of the body and spreader, for example. In the manner of a hinge, adjustable.
  • the expansion sleeve has a circumferential groove.
  • the circumferential groove causes - viewed in the longitudinal axis direction of the expansion sleeve - a section with a tapered cross-section of the expansion sleeve, so that the expansion sleeve can be particularly elastically deformed in the groove.
  • the groove In cooperation with the setting head of the setting mandrel, the groove causes a defined deformation.
  • the design of the expansion sleeve with a circumferential groove to determine their elastic deformation properties can be produced particularly easily and inexpensively. On the position of the groove and the groove shape while the deformation behavior of the expansion can be easily determined according to the requirements.
  • the groove is designed such that a transition from the groove flanks to a groove base is formed bent.
  • Such a configuration of the groove ensures in a particularly advantageous manner a good elastic deformation behavior of the expansion sleeve, so that it expands elastically in the required manner in cooperation with the expansion head of the expanding mandrel.
  • An alternative deformation behavior of the expansion sleeve can be set via alternative and supplementary shapes of the groove base and / or the transitions.
  • the expansion sleeve can in principle be formed of any material and constructed in different ways, for example. Also multi-layered.
  • the expansion sleeve can also be formed from a composite material which has the required elastic properties in order to elastically expand in cooperation with the expansion head.
  • the expansion sleeve is formed from a spring steel.
  • the production of an expansion sleeve made of spring steel is characterized by the particularly low production costs.
  • the strength of spring steel is also sufficient to cause the required deformation in cooperation with the expansion rivet.
  • the spreading sleeve arranged on the rivet head is adapted to the expansion rivet to be set, wherein the outer diameter of the expansion sleeve is dimensioned such that it is smaller than the inner diameter of the expansion rivet to be set.
  • the inner diameter of the expansion sleeve is in turn adapted to the expanding mandrel, so as to ensure that a displacement of the expanding mandrel from the release position in the set position causes expansion of the expansion sleeve, which then in the set position, at least in sections, a larger outer diameter than the inner diameter of the expansion rivet , which has a deformation of the expansion rivet results in the displacement in the expansion position.
  • the expansion sleeve can be arranged detachably on the rivet.
  • the detachable arrangement of the expansion sleeve on the rivet head makes it possible to adapt the device in a simple manner by changing the expansion sleeve to different expansion rivets.
  • the releasable arrangement of the expansion sleeve to the rivet head can basically be done in any way, for example, by a form-fitting design in the manner of a bayonet lock or by a magnetic fixation.
  • the shape of the closing head can be adjusted.
  • the arrangement of the spreading head is as well as its concrete form and the shape of the contact portion basically arbitrary. According to a particularly advantageous embodiment of the invention, however, it is provided that the expansion head is arranged on a rivet head opposite end of the expanding mandrel. According to this embodiment of the invention, the expansion head forms the end of the expanding mandrel, so that it is ensured that on the opposite side of the setting head of the components to be connected only a very shallow space is required to set the Sp Schwarzniets to form the closing head.
  • the expansion head may have a basically arbitrarily configured contact portion for the deformation of the expansion sleeve, as far as it is ensured that this at least partially in the set position cooperates with the expansion sleeve, that it is elastically expanded. It is conceivable, for example, the arrangement of several projections, which are distributed on the peripheral surface arranged on the setting mandrel and form the contact portion in the set position, with which the setting mandrel deforms the expansion sleeve.
  • the expansion head is formed by a spreading projection arranged on the expanding projection.
  • This embodiment of the invention enables the particularly simple and cost-effective production of the expanding mandrel with a spreading head.
  • the circumferential projection also ensures a uniform deformation of the expansion sleeve and thus a uniform deformation of the expansion rivet, which can thus be set in a particularly reliable manner to the workpieces to be joined.
  • the spreading head is releasably connected to the expanding mandrel.
  • the detachable connection makes it possible to adapt the expanding mandrel in a simple manner to different requirements.
  • different closing head shapes can be produced by different Sp Dahlkopfformen, the Sp Dahlkmü then cause a defined deformation of the expansion, so for example, a punctual deformation of the expansion can be done.
  • the design of the releasable connection of spreading head and expanding mandrel is basically arbitrary.
  • the spreading head can be screwed to the expanding mandrel.
  • the interchangeability of the spreading head makes it easy to adapt the device to different expansion rivets.
  • the configuration of the projection provided according to an advantageous development for the formation of the expansion head can in principle be carried out in any desired manner, taking into account the deformation of the expansion rivet to be achieved.
  • the projection has a conical cross section or partially arcuate cross-section.
  • a conical cross section in which the setting head is formed, for example, frusto-conical, a uniform deformation of the expansion sleeve is ensured, whereby a uniform deformation of the expansion rivet takes place.
  • the projection according to this embodiment of the invention may also be designed such that the outer surfaces extend arcuately in cross section. This also allows a defined deformation of the expansion sleeve and thus also of the expansion rivet can be achieved.
  • the deformation profile of the expansion rivets for forming the closing head can thus be set variably.
  • the rivet head and / or the expansion sleeve is designed for the detachable arrangement of a Sp Drosseniets.
  • the expansion rivet to be set can be fastened to the device, which allows a particularly simple installation of the expansion rivet, wherein this is inserted together with the device in the opening of the components to be connected.
  • the determination of the Sp Drllniet to be set can be achieved for example by a magnetic configuration of the rivet head and / or the expansion sleeve.
  • FIG. 1 a device 1 for setting of expansion rivets 5 is shown.
  • the device 1 in this case has a rivet head 2, which can be connected via an external thread 15 with a riveting tool, not shown here.
  • the riveting tool serves to drive, namely for the axial displacement of an expanding mandrel 3, which is slidably mounted in a through hole 14 of the rivet head 2.
  • Coaxial with the expanding mandrel 3 is in a receptacle 13 of the rivet head 2, an expansion sleeve 4 is inserted.
  • the expanding mandrel 3 has at its opposite end of the riveting tool, in the region of the expansion sleeve 4 on an expansion head 10, which with its peripheral surface 12 in the in FIG. 1 shown release position of the expanding mandrel 3 rests against a deformation portion 16 of the expansion sleeve 4, without deforming them.
  • the expansion head 10 has by a circumferential projection 11 an outer diameter which is larger than the inner diameter of the expansion sleeve 4th
  • the expansion rivet 5 for connecting the sheets 6 in a position coaxial with the expansion sleeve 4 and the expanding mandrel 3, wherein the outer diameter of the expansion sleeve 4 is less than the inner diameter of the expansion rivet. 5
  • the expansion sleeve 4 has at its end opposite the rivet head 2 a deformation portion 16, which adjoins a circumferential groove 7 of the expansion sleeve 4.
  • the deformation section 16 in this case has a slightly conical shape in cross-section, wherein the outer diameter of the expansion sleeve 4 in the release position and in the region of the deformation section 16 is smaller than the inner diameter of the expansion sleeve 4th
  • the expansion sleeve 4 is expanded such that the expansion sleeve 4 in Area of the deformation portion 16 comes with its outer surface in contact with the Sp Schwarzniet 5 and this on the setting head 17 opposite side to form a closing head 10 plastically deformed, so that the Sp Schwarzniet 5 is arranged positively in the opening of the components 6.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
EP17166217.4A 2016-04-13 2017-04-12 Dispositif de pose de rivets d'expansion Withdrawn EP3231529A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016106801.2A DE102016106801B4 (de) 2016-04-13 2016-04-13 Vorrichtung zum Setzen von Spreiznieten

Publications (1)

Publication Number Publication Date
EP3231529A1 true EP3231529A1 (fr) 2017-10-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17166217.4A Withdrawn EP3231529A1 (fr) 2016-04-13 2017-04-12 Dispositif de pose de rivets d'expansion

Country Status (2)

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EP (1) EP3231529A1 (fr)
DE (1) DE102016106801B4 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE707582C (fr) *
GB1363274A (en) * 1970-08-11 1974-08-14 Jaffe D M Apparatus for setting fasteners

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013223520A1 (de) * 2013-11-19 2015-05-21 Bayerische Motoren Werke Aktiengesellschaft Blindniet, Setzverfahren und Setzwerkzeug

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE707582C (fr) *
GB1363274A (en) * 1970-08-11 1974-08-14 Jaffe D M Apparatus for setting fasteners

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Publication number Publication date
DE102016106801A1 (de) 2017-10-19
DE102016106801B4 (de) 2019-11-14

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